Converged infrastructure is a way of structuring an information technology (IT) system which groups multiple components into a single optimized computing package. Components of a converged infrastructure may include servers, data storage devices, networking equipment and software for IT infrastructure management, automation and orchestration. VMware ESXi VMware ESXi. A hypervisor is a piece of software that creates and runs virtual machines. Hypervisors are divided into two groups: Type 1 hypervisors – also called bare metal hypervisors, Type 1 hypervisors run directly on the system hardware. A guest operating-system runs on another level above the hypervisor. VMware ESXi is a Type 1 hypervisor that runs on the host server hardware without an underlying operating system. Type 2 hypervisors – hypervisors that run within a conventional operating-system environment, and the host operating system provides I/O device support and memory management. Examples of Type 2 hypervisors are VMware Workstation and Oracle VirtualBox . ESXi provides a virtualization layer that abstracts the CPU, storage, memory and networking resources of the physical host into multiple virtual machines. That means that applications running in virtual machines can access these resources without direct access to the underlying hardware. VMware refers to the hypervisor used by VMware ESXi as vmkernel. vmkernel receives requests from virtual machines for resources and presents the requests to the physical hardware. SLES SUSE Linux Enterprise Server (SLES) is a Linux-based operating system developed by SUSE. It is designed for servers, mainframes, and workstations but can be installed on desktop computers for testing as well. Major versions are released at an interval of 3–4 years, while minor versions (called "Service Packs") are released about every 12 months. SUSE Linux Enterprise products, including SUSE Linux Enterprise Server, receive more intense testing than the openSUSE community product, with the intention that only mature, stable versions of the included components will make it through to the released enterprise product.